The subject of this article does not contribute canonical content to the BattleTech universe, either because it is not intended to or because it is not an official product.See the article's section on Canonicity for details.

The faction list by Peter La Casse, colloquially known as the (Peter) La Casse (faction) list and by many similar names (often spelling his surname as a single word, with the 'c' occasionally capitalized—"LaCasse" or "Lacasse"), is a fan-made online resource for BattleTech.

The list is widely known (and used) throughout the fan base; even some BattleTech authors and developers have said they used it as a quick-reference resource for their work.[citation needed]

It became outdated over time as more and more additional units were published, and was eventually surpassed by another more detailed and more up-to-date fan project, the 3025-3050 Random Assignment Tables.